Key Takeaways
- Approximately 79 million Americans are currently infected with HPV, with genital warts being one of the most common manifestations caused by low-risk types 6 and 11
- Globally, an estimated 340,000 new cases of genital warts occur annually in the United States alone, primarily among adolescents and young adults
- The prevalence of genital warts in sexually active women aged 18-25 in the US is about 1% at any given time, based on clinical diagnoses
- Human papillomavirus (HPV) types 6 and 11 cause 90% of genital warts cases worldwide
- Transmission occurs through skin-to-skin contact during vaginal, anal, or oral sex in 65% of cases
- HPV is transmitted asymptomatically in 70-80% of infections leading to latent genital warts
- Genital warts appear as single or clustered soft, moist, painless growths 1-5mm on vulva, vagina, anus
- 30-50% of infected individuals develop visible warts within 3-6 months
- Itching, burning, or bleeding occurs in 20% of symptomatic cases during intercourse
- Quadrivalent HPV vaccine (Gardasil) prevents 90% of genital warts via types 6/11
- Condom use reduces transmission by 70% but not fully due to skin contact
- Vaccination before sexual debut prevents 99% HPV-6/11 infection in trials
- Imiquimod 5% cream applied 3x/week clears 50% warts in 16 weeks
- Podophyllotoxin 0.5% solution self-applied twice daily for 3 days/week clears 45% in 4 weeks
- Cryotherapy with liquid nitrogen repeated every 2 weeks achieves 70-90% clearance at 3 months
Genital warts are very common but vaccination has dramatically reduced new cases.
Clinical Features
Clinical Features Interpretation
Epidemiology
Epidemiology Interpretation
Etiology
Etiology Interpretation
Prevention
Prevention Interpretation
Treatment
Treatment Interpretation
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